Abstract: Systems and methods for determining and providing dynamic content item images are provided. A data processing system can determine a content item including an image. The content item is provided for display on a device. Upon receiving an indication of interest in the image, a plurality of additional images is determined based on historical activity information associated with the device. The additional images are provided for display by the device, in place of the image. Data associated with each image includes a URL of a web page associated with a product depicted in an image. The web page enables the user to purchase the product depicted in the image.